/*
* Copyright ( C ) 2017 The Android Open Source Project
*
* Licensed under the Apache License , Version 2 . 0 ( the " License " ) ;
* you may not use this file except in compliance with the License .
* You may obtain a copy of the License at
*
* http : //www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing , software
* distributed under the License is distributed on an " AS IS " BASIS ,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND , either express or implied .
* See the License for the specific language governing permissions and
* limitations under the License .
*/
// This test was inspired by benchmarks.MicroMethodHandles.java.MicroMethodHandles.
import java.io.PrintStream;
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
class A {
public Long binaryFunction(int x, double y) {
return 1000 l;
}
}
class Test {
Test() throws Throwable {
this .handle = MethodHandles.lookup().findVirtual(A.class , "binaryFunction" ,
MethodType.methodType(Long .class , int .class ,
double .class ));
this .a = new A();
this .x = new Integer(72 );
this .y = new Double (-1 .39 e-31 );
}
void execute() {
try {
executeFor(2000 );
System.out.println(getName());
} catch (Throwable t) {
System.err.println("Exception during the execution of " + getName());
System.err.println(t);
t.printStackTrace(new PrintStream(System.err));
System.exit(1 );
}
}
void executeFor(long timeMinimumMillis) throws Throwable {
long startTime = System.currentTimeMillis();
long elapsed = 0 ;
while (elapsed < timeMinimumMillis) {
exercise();
elapsed = System.currentTimeMillis() - startTime;
}
}
void exercise() throws Throwable {
for (int i = 0 ; i < EXERCISE_ITERATIONS; ++i) {
run();
}
}
void run() throws Throwable {
long result = (long ) handle.invoke(a, x, y);
}
String getName() {
return getClass().getSimpleName();
}
private static final int EXERCISE_ITERATIONS = 500 ;
private MethodHandle handle;
private A a;
private Integer x;
private Double y;
}
public class Main {
public static void main(String[] args) throws Throwable {
Test[] tests = new Test[] { new Test(), new Test(), new Test() };
for (Test test : tests) {
test.execute();
}
System.out.println("passed" );
}
}
Messung V0.5 in Prozent C=88 H=92 G=89
¤ Dauer der Verarbeitung: 0.3 Sekunden
¤
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